Centric butterfly valves with PTFE or PFA sealing
Centric butterfly valves with PTFE or PFA sealing
Centric butterfly valves with PTFE or PFA sealing / lining are used whenever the medium is corrosive and capable of affecting carbon steel, stainless steel and elastomer materials. The PTFE or PFA liner protects internal parts against corrosion while ensuring excellent sealing capability with the disc.
Examples of applications that require a PTFE or PFA liner are sulphuric acid, chlorine, hydrochloric acid, nitric acid and similar acids. Like elastomers, both PTFE and PFA have limitations in temperature and pressure.
Specifications
- Range: DN50 to DN900
- Pressure: 0 barg to 16 barg (PN10-16 and 150lbs.-300lbs.)
- Temperature: -50⁰C to 230⁰C
- Design: 1-piece or 2-piece casing
- Tightness: bi-directional bubble tight (EN 12266-A)
- Casing material: cast iron, steel, stainless steel
- Sealing material: PTFE or PFA, possibly with added carbon
- Exotic materials possible: yes
- Available with handle, handwheel, pneumatic actuator and electric actuator
Application
Examples of media that require a PTFE or PFA liner are sulfuric acid, chlorine, hydrogen chloride, nitric acid and similar acids. Like rubber, both PTFE and PFA have temperature and pressure limitations.
Hanwel supplies PTFE lined butterfly valves and PFA lined butterfly valves with wafer type, lug type and flanged connections. Housing materials can be fabricated out of cast iron, carbon steel or stainless steel.
Product request
Request your product by completing the form. Do you have any questions about Centric butterfly valves with PTFE or PFA sealing? Feel free to write these down on the form as well. Our specialists will contact you directly to discuss your needs.
